Change-speed gearing.



No. 872,131. PATENTED NOV. 26. 1907.

0. JOHNSON.

CHANGE SPEED GEARING.

' APPLICATION FILED MATH, 1907.

2 SHEETS-SHEET l- WITNESSES: IZV' VEJV TOR A TTORJV' E Y,

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No. 872,131. PATENTED NOV. 26, 1907. G. JOHNSON.

CHANGE SPEED GEARING.

APPLICATION FILED MAY 3, 1907.

2 SHEETSSHEIIT 2.

XXZQ Zgiq A TTORJV' E Y.

; ,UNI'IED STATES PATENT OFFICE.

CHARLES JOHNSON, OF AUBURN, NEW YORK, ASSIGNOR OF ONE-HALF TO CHARLES FRANK, OF NEWARK VALLEY, NEW YORK..

CHANGE-SPEED GEARING.

Specification of Letters Patent.

Patented Nov. 26, 1907.

To all whom it may concern:

Be it known that I, CHARLES JOHNSON, a cltlzen of the United States, and resident of Auburn, in the county of Cayuga, in the State of New York, have invented new and useful Improvements in Change-Speed Gearlng, of which the following, taken in (10111180? tion with the accompanying drawings, is a full, clear, and exact description.

This invention has special reference to the mechanisms employed for transmitting motion to the longitudinally movable apron which constitutes the bottom of the vehiclebody of the manure spreading machine.

. Machlnes of the aforesaid class are operated upon the ground of a field, and are mounted on vehicle wheels by which they travel on the road in'moving to and from the field and in consequence thereof, the mechanisms of said machines are liable to become clogged by dust and mud gathering thereon in theiroperation and aforesaid travel.

, nure spreading machine.

The object of this invention is to shield the connections of the change-speed gearing which transmits motion from one of the traction-wheelsto the longitudinally movable apron which forms the bottom of the ma- And to that end the invention consists in the improved connectionof the pinion and shifting collar to the longitudinally movable spline of the shaft on which said pinion and collar are mounted as hereinafter described.

the accompanying drawings Figure 1 is a side elevation of a manure spreadlng machine embodying my present improvements;

' Fig. 2 is a vertical longitudinal section of the shaft and its equipment for transmitting motion to the a ron of the aforesaid machine;

Fig. 3 is a ,p an view of the aforesaid shaft with the cooperating parts shown in section; Fig. 4 is an enlarged transverse section on the line Y Y in Fig. 2; Fig. 5 is an enlarged transverse section on the line Z-Z in Fig. 2; Fig. 6 is a longitudinal sectional View on the line XX in Fig. 5; Fig. 7 is an I end view of the aforesaid shaft; Fig. 8 is a side view of one of the brackets which support therear end of the vehicle-body on the axle of the traction-wheels; and Fig. 9 is an inner side view of the collar which looks the axle on the body of the vehicle and is formed with theaxialbearing for the aforesaid shaft.

'1+ denotes the box or body of the vehicle to' which the manure-spreading mechas shown in Fig. 1.

anisms are connected. 2 represents the longitudinally movable apron which constitutes the bottom of the aforesaid body and serves to carry the manure to the rear end of the body, where the manure is to be distributed upon the ground.

3 denotes the usual beater which is arranged over the rear end of the apron for the purpose of effectually scattering and spreading the manure in its delivery onto the ground.

-4 represents one of the traction-wheels whichare journalcd on the hind-axle -5 fastened in brackets -6 which are rigidly attached to the side sills 7. of the body -1- as shown in Fig. 8. The outer side of the bracket 6 is formed with an annular clutch-face 8 surrounding the axle -5 and interlocking with a similar clutch-face 9 on the inner end of a collar l( mounted on the aforesaid axle.

1 1- represents a disk which is mounted loosely on the axle 5 between the collar 10 and the hub of the traction-wheel 4- as .shown in Fig. 3 of the drawings. By means of suitable interlocking clutch members (indicated at 12 in Fig. 3), the disk 1 1 receives rotary motion from the traction-wheel.

The inner face of the disk 1 1 has projecting from it a plurality of concentric rows of gear-teeth 13 as shown in Figs. 2 and 3.

The collar 10 is formed with a socket 14- in which is j ournaled the front end of a shaft 15, the opposite end is journaled in a bracket 16 which is rigidly attached to the side of the rear end of the body 1 Said shaft is thus confined in its alinement. The journal of the front end of the shaft 15 is reduced circumferentially corresponding to the socket 14 as shown at -.16. The main portion of the shaft 15, from the reduced portion 16 rearward is provided with a longitudinal groove 17- in which is seated a longitudinally movable spline 18 formed with outwardly projecting teeth 19 and 19 respectively on opposite ends thereof. The front end of the groove 17 is cleared by the reduced end portion or journal 16 of the shaft and thus the said groove is easily formed in the shaft.

20 denotes a pinion mounted on the shaft 15 movably lengthwise thereof and adapted to engage the gear-teeth 13 of one of the concentric rows at a time. The axial bearing of the said pinion is formed with an internal socket -2 1 into which the front tooth 19 of the spline -18 is in- 'sertedand thus anchors thelpinion to the spline, as shown in Fig. 6. By the aforesaid arrangement of the socket 21 in the interior of the pinion only the single tooth 19 is required to effect the anchoring of the pinion on the spline.

22- represents a collar which loosely embraces the shaft 15- so as to prevent the said collar from receiving rotary motion and is formed with a circumferential groove 23 in the center of its inner side. Said collar isconnected to the spline 18 by the rear tooth '19 engaging the groove 23 in Which said tooth is allowed to travel during the rotation of the shaft 15. The sides of the collar are intact to completely embrace the shaft and shield the tooth 19 in the interior of the collar. By shifting the collar '22- longitudinally on the shaft the spline 18-- is caused to move the pinion -20 correspondingly from one row of gear-teeth -13 to another row of said teeth and thus change the speed of rotation of the shaft 15- as may be desired. The spline 18 connecting the pinion 20 to the shiftable collar 22 in thus made to serve the purposes of transmitting motion to the shaft 15- and regulating said motion.

The collar 22 is prevented from rotating as aforesaid and is formed with a radially projecting lug -24 to which is suitably connected the rear end of a longitudinally movable and laterally restrained rod 25, the front end of which is connected to the lower end of a pendent lever 26 pivoted to the side of the body 1 as shown in Fig. 1. Another rod 27 is connected lever 26 and has its front end connected to a handlever28 pivoted to the side of the body 1 in proximity to the drivers seat -29, the occupant of which operates the lever 28- to shift the collar 22 and thereby move the pinion 20 to a position to engage the necessary row of gearteeth -13 to impart the desired speed to the shaft .15-. is provided with the usual dog (not shown). to engage a rack 30 attached to the side of the body 1.

-3 1' represents a worm attached to the shaft 15 near the rear end thereof and engaging a worm-gear 32- attached to the shaft of the wheels which carry the apron 2, atthe rear end of the body 1. Said apron thus receives its motion from the shaft 15-.

What I claim as my invention is In combination with the rotary disk pro vided with a plurality of concentric rows of gear-teeth, ashaft extending radially from the axis of said disk and provided with a longitudinal groove, a longitudinally mov- The hand-lever -2 8 able spline in said groove and formed with a 1 cumferential groove in the center of'its interior and engaging the tooth on the rear end of the spline, with a lug projecting from the exterior of said collar and connected to the.

aforesaid speed changin rod as set forth.

CHARLES JO NSON. [L. s.[| Witnesses:

WILLIAM HAWLEY, SIDNEY S. WILLs. 

